These cheats can be used without being in debug mode,continue →
but requires you to achieve a certain goal in every mission. It
also must be done under the realistic or director's cut difficulty
Alien Episode I - Temple
Cheat: Sniper Munch.
Objective: Ten live civilian head bites.
Alien only. It lets you do long distance head-bite attacks (a
ranged weapon for the Alien). The best way to get this cheat is
make sure the civilians throw their Molotov cocktails away first
and do not hit themselves. Then, wait for them to cower and pick
them off. Do not forget the ones locked in the cages.
Alien Episode II - Escape
Objective: Complete the level in under two minutes.
This cheat is very fittingly named. The entire screen waves about,
and will probably give you motion sickness before too long.
Alien Episode III - Ferarco
Objective: Fifteen dead civilian head-bites.
This cheat is quite interesting. It is not just stick figures
(as you may believe), but actual pipe cleaners wrapped around
for enemies. Note: Kill them using your tail and not your claws,
or you risk hacking their head off.
Alien Episode IV - Gateway
Cheat: Motion Blur.
Objective: Complete the level in under four minutes with an average
speed of more than nine meters-per-second.
Motion blur makes everything that moves, blurry. To get it, learn
the level and run.
Alien Episode V - Earthbound
Objective: One live Predator head-bite.
This makes the level mirrored left to right.
Colonial Marine Episode I - Derelict
Cheat: John Woo Mode.
Objective: 80% head shots.
Have 80% of your hits as head shots, or 80% of your kills by removing
Colonial Marine Episode II - Colony
You start the game with 99 grenades in your pulse rifle, no bullets,
and cannot pick up any other gun except pulse rifles to add to
Colonial Marine Episode III - Invasion
Cheat: Warp Speed.
Objective: Finish in under four minutes.
You need to know the level and have a little luck.
Colonial Marine Episode IV - Orbital
Cheat: Land of the Giants.
Objective: Less than twenty shots.
Makes you very tiny, but just as deadly and perform about as well.
Colonial Marine Episode V - Tyrargo
Cheat: Slug Trail.
Objective: 32 Alien kills.
All Alien enemies start with a missing leg. They crawl around
bleeding a trail behind them.
Predator Episode I - Waterfall